CVE-2025-58636 is a critical vulnerability identified in the CRM Perks WP Gravity Forms Keap/Infusionsoft plugin for WordPress, affecting versions up to and including 1.2.3. The flaw arises from insecure deserialization of untrusted data, which enables an attacker to perform object injection attacks. Deserialization vulnerabilities occur when untrusted input is processed by a program expecting serialized objects, allowing attackers to manipulate the input to inject malicious objects. In this case, the vulnerability allows remote attackers to send crafted payloads that the plugin deserializes without proper validation or sanitization. This can lead to arbitrary code execution, privilege escalation, or complete system compromise. The CVSS 3.1 base score of 9.8 reflects the vulnerability's critical nature: it is remotely exploitable over the network without any authentication or user interaction, and it impacts confidentiality, integrity, and availability severely. The plugin integrates WordPress Gravity Forms with Keap/Infusionsoft CRM systems, often used to manage customer data and marketing automation. Exploitation could allow attackers to access sensitive customer information, manipulate CRM data, or disrupt business operations. Although no active exploits have been reported yet, the high severity and ease of exploitation make it a significant threat. The vulnerability was reserved in early September 2025 and published in November 2025, indicating recent discovery and disclosure. No official patches or updates are linked yet, so organizations must be vigilant and apply mitigations promptly.

For European organizations, this vulnerability poses a severe risk due to the widespread use of WordPress and CRM integrations in business operations, especially in sectors like retail, finance, and services that rely heavily on customer data management. Exploitation could lead to unauthorized access to sensitive personal data protected under GDPR, resulting in regulatory penalties and reputational damage. The ability to execute arbitrary code remotely without authentication means attackers could deploy ransomware, steal intellectual property, or disrupt critical business functions. Given the plugin’s role in integrating CRM data, attacks could compromise marketing campaigns, sales pipelines, and customer communications, impacting revenue and customer trust. The lack of known exploits currently provides a small window for mitigation, but the critical CVSS score demands immediate attention. Organizations failing to address this vulnerability risk significant operational and compliance consequences.

1. Immediately check for and apply any available updates or patches from CRM Perks for the WP Gravity Forms Keap/Infusionsoft plugin. 2. If no patch is available, consider temporarily disabling the plugin or removing it until a fix is released. 3. Restrict network access to WordPress administrative interfaces and plugin endpoints using firewalls or IP whitelisting to limit exposure. 4. Implement Web Application Firewalls (WAFs) with rules to detect and block malicious deserialization payloads targeting this plugin. 5. Conduct thorough logging and monitoring of WordPress and server logs to identify suspicious activity indicative of exploitation attempts. 6. Review and harden WordPress security configurations, including least privilege principles for user accounts and plugin permissions. 7. Educate IT and security teams about this vulnerability to ensure rapid response and incident handling. 8. Prepare incident response plans specifically for potential exploitation scenarios involving this vulnerability. 9. Consider isolating CRM-related WordPress instances from other critical infrastructure to contain potential breaches. 10. Engage with CRM Perks support or security advisories to stay informed about patches and mitigation updates.